Verified answer

Ca(II)H(I) → CaH2.

N(IV)O(II) → NO2.

P(V)O(II) → P2O5.

Mn(IV)O(II) → MnO2.

Ba(II)S(II) → BaS.

Fe(III)Cl(I) → FeCl3.

CaH2, N2O3, P2O5, Mn2O7, BaS, FeCl3.